Ford 6.7 - what oil do you use?
I know the question will elicit various responses, but a post regarding a 2012 Ford 6.7 engine failure on another forum prompted the question. He used 10w30 non-synthetic oil which he stated was chan...
Forum Discussion
The 6.7 Ford specifies the 10w-30 Diesel oil as the "normal" oil. It specs out 5W-40 or 15W-40 for severe use. Myself I run 15W-40 Apr-Oct & then 10W-30 the other 6 mos here in CO. If I lived in a warmer climate, I'd use the 15W-40 year round...
